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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Dear all,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I am modeling a 12 zone building in TRNSYS using TRNSYS3D. When I switch to the detailed radiation mode for the following zones in my building:<o:p></o:p></p><p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l1 level1 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>1.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]><span dir=LTR></span>Workshop<o:p></o:p></p><p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l1 level1 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>2.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]><span dir=LTR></span>MP_room<o:p></o:p></p><p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l1 level1 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>3.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]><span dir=LTR></span>LV_room<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>TRNBUILD gives me error while generating shading matrices. It says that the zones are not convex or closed volumes. However, all these zones are connected to each other and are normal rectangular cuboid shape with one-two doors in them.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>The model runs fine when I use standard radiation models in these zones with the other zones using detailed radiation model. Kindly find the attached zip file containing the following:<o:p></o:p></p><p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l0 level1 lfo2'><![if !supportLists]><span style='mso-list:Ignore'>1.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]><span dir=LTR></span>Original xx.idf<o:p></o:p></p><p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l0 level1 lfo2'><![if !supportLists]><span style='mso-list:Ignore'>2.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]><span dir=LTR></span>TRNBUILD generated idf i.e. xx_b17.idf file<o:p></o:p></p><p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l0 level1 lfo2'><![if !supportLists]><span style='mso-list:Ignore'>3.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]><span dir=LTR></span>TRNBUILD xx.b17 file<o:p></o:p></p><p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l0 level1 lfo2'><![if !supportLists]><span style='mso-list:Ignore'>4.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]><span dir=LTR></span>TRNBUILD xx.bld file<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Can any of you kindly check what am I missing that is causing TRNBUILD to consider these zones as convex or not closed volumes? <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Are the doors that are causing problem? <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I have already checked that the surfaces have outward pointing normal. Maybe you can check again if I didn't checked it properly. In the original idf, all surfaces have the proper color of what they should be having.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thanks,<o:p></o:p></p><p class=MsoNormal><b><span style='font-family:"Arial","sans-serif"'>Muhammad Tauha Ali</span></b><o:p></o:p></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Research Engineer<br></span><span style='font-size:10.0pt'><img width=171 height=50 id="Picture_x0020_1" src="cid:image001.png@01CD8C45.A4D7CA90" alt="Description: cid:3360751750_2690204"><br><span style='color:#0062B2'><br>PO Box 54224, Abu Dhabi, United Arab Emirates<br>Mobile +971 50 109 4222</span></span><o:p></o:p></p><p class=MsoNormal><span style='font-size:10.0pt;color:#0062B2'>Direct +971 2 810 9151 </span><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>